#Mariana Meso

[memegetter]

Imagine you are standing with your feet in the deepest part of the ocean and with the top of your head at sea level. As the tide rises and falls, the difference in water level is roughly equivalent to the thickness of two, or perhaps three, strands of your hair. Now let’s travel down from the surface. We first enter the Epipelagic Zone, which takes its name from the Greek epi, meaning surface, and pelagos meaning sea. The Epipelagic Zone is also known as the Sunlit Zone because sunlight penetrates the water and brings life to photosynthetic plankton, which converts carbon dioxide into energy. The Earth’s rainforests are not, as some people have stated, the ‘lungs of the world’. The Epipelagic Zone is. It produces up to 80 percent of our oxygen. It is also home to 90 percent of ocean life, including the most recognizable forms such as whales, dolphins, fish, sharks and jellyfish. As we stand in our ocean and continue down, about halfway between the top of our skull and the top of our ears, we leave the Epipelagic Zone and enter the Mesopelagic Zone. This zone, like the others, takes its name from the Greek meso meaning middle. But we are a long way from the middle, or even the average depth of the ocean. The Mesopelagic Zone is sometimes called the Twilight Zone, because the last faint rays of light from a sun high in the sky, are fading by the time they reach the top of this zone. Vertebrates and invertebrates live here in darkness, with many of them swimming upwards at night to feed. Some plant life also survives here. On our submerged body, somewhere between the bottom of our nose and the top of our mouth, we leave the Mesopelagic Zone and enter the Bathypelagic Zone. Bathy means deep. This zone is in perpetual darkness. No plant life lives here. Some, water-borne organisms are luminescent to attract prey or a mate. Many species here are totally blind, and most live on the detritus that falls from the higher zones. Just below the bottom of our sternum, before we reach our navel, we enter the Abyssopelagic Zone. Abyss means seemingly bottomless. The water is high in oxygen, but low in nutrients. There is very little discernible life and the water is cold – about 37 °F or 3 °C. Chemosynthetic bacteria thrive near hydrothermal vents in the Abyssopelagic Zone. What fish and invertebrates do live here feed on these bacteria. This, in a sense, is ground zero in the food chain. To stand in the deepest part of the ocean we need to stand in one of the trenches between the tectonic plates. In our imaginary exercise, we are standing in the Mariana Trench, located off the Mariana Islands in the Pacific Ocean. Trenches are extremely narrow. The one we are standing in, begins at our groin. In the 1950s, scientists began to notice distinct life in the trenches and started referring to them as the Hadal Zone. A Greek derivative again, but whereas the names of the zones above indicate where in the ocean they are located, the Hadal Zone was named to signify what. Welcome to hell. Let us begin our journey.

The introduction to The Frontier Below by Jeff Maynard is so hardcore!!

[elcorreografico]

🌎 #Salud | #ObrasSocial | #Provincia | #LaPlata 📬 #IOMA y #AgremiaciónMédicaPlatense acercan posiciones 💻 Conversaron sobre las propuestas de ambas partes y vuelven a reunirse este miércoles Con la presencia del Defensor del Pueblo de la Provincia de Buenos Aires, Guido Lorenzino, las autoridades de Instituto Obra Médico Asistencial (IOMA) -encabezado por su presidente, Homero Giles-, recibieron en la Sede Central de La Plata a los representantes de la Agremiación Médica Platense (AMP) con el fin de conversar y acercar posturas sobre las propuestas y contrapropuestas que presentaron las partes.